Improved tool for the manufacture of paper bags



UNITED. STATES sUsAN,Y M. KIRK, on oAMDnN, N. J., AND n. J. nowLnT'r, OFPHILADELPHIA,

PAT EELQEEICE.

ASSIGNORS TO E. J. 'HOWLETR' OF PHILADELPHIA, PA.

IMPROVED TOOL FOR THE MANUFACTURE OF PAPER BAGS.

Specification forming part of Letters Patent No. 62,342, dated February 26, 1867.

version of the same into paper bags are facilitated. ,j

In order to enable others to make and use our invention, we will now proceed to describe its construction and operation.

On reference to the accompanying drawing, which forms a part of this specification, Figure l is a plan view of our instrument for facilitating the manufacture of paper bags; Fig. 2, a section on the line l 2, Fig. 1; and Figs. 3, 4, and, diagrams illustrating the manner of using the instrument.

Similar letters referto similar parts throughout the several views.

A represents a plain liat board, to the upper surface of which, near one end, is secured a transverse strip, a, and to the top of the latter is secured a blade, B, by set-screws d, the stems of the latter passing through elongated openings in the blade, which is made of thin elastic metal or other suitable material, its outer end tending to bear on the board A.

On each edge of this board, and near the strip c, is a vertical plate, c, each plate having an elongated opening, j, through ,which passes a set-screw, f, into the end of the strip, so that after loosening these screws the said strip can be adjusted on the board A to or from the strip c at pleasure, and secured after adjustment.

A plate, E, is illustrated in the drawing as occupying a position beneath the blade B; but this plate is not necessary excepting in the absence of the blade, and when used in the manner and under the circumstances described hereinafter.

The instrument is employed in the followlayer shall project a given distance beyond the outer end of the blade. The operator now takes the projecting end of the uppermost of the tubes of paper and turns it over, and

presses it against the upper surface of the plate, as seen at m, Fig. 3, the fold having an edge, n, determined by the end of the plate. The folded portion is now elevated, the tube of paper stretched laterally, and pressed down, so as to assume the form represented in Fig. 4.

The corners p p are now folded, as seen in Fig. 5,A and the folds pasted, thus completing the bottom of the bag, which is again folded on the dotted lines g, after which the entire bag is withdrawn from beneath the blade B, and placed upon a layer of previously-completed bags, and submitted to a moderate pressure. Tube after tube of the layer beneath the blade is thus treated with that rapidity which could not be eected without the aid of the above-described instrument.

When larger or shorter bags are required, the strip D is so adjusted that no more of each tube shall project beyond the end of the blade than is absolutely necessary for making the folds desired.

If the openings in the blade B for the admission of the screws d are made of sufficient length to allow the blade to be adjusted longitudinally, the strip D may be dispensed with, the front of the stationary strip c in this case serving as a guide against which to adjust the tubes of paper, and the adjustable blade serving to determine the extent of the projection ofthe tubes beyond the outer end of the said blade.

A simple plate, E, may be used in place of the blade, the plate being maintained in one position, laterally and longitudinally, by guiding-pins z', which permit it to be elevated, so that a layer of flattened paper tubes may be placed beneath it, the tubes in this case be i ing foldedl over the `front edge of the plate,

2Enl?, the bar D determining the extent of the We claim as our invention and desire to secure by Letters Patentl. The combination of the board A, blade B, and adjustable strip D, the whole being arranged substantially in the manner described.

2. The combination of the board A, the permanent strip a, and adjustable blade B.

8. The lcombination of the board A, the guided plate E, and adjustable strip D.

In testimony whereof We have signed our names to this specication in the presence of two subscribing Witnesses.

SUSANM. KIRK. EDWIN J. HOWLETT. Witnesses:

H. HoWsoN, JOHN WHITE. j 

